A20-OLinuXino-LIME update


Yesterday we made first A10-OLinuXino-LIME prototypes and about 22.00 o’clock Dimitar Gamishev ping me that the software is up and running and everythings works as expected 🙂

Today we decided that it will not hurt if we assembly one LIME with A20 to see if it will work and you can see on the picture above the result!

Debian needed new uboot with DDR3 memory bus width changed to 16 bit vs 32 bit for A20-OLinuXino-MICRO then run without problems. As we assembled also the NAND flash on the first protos we decided to try Android too, suprisingly the Android image for A20-OLinuXino-MICRO programmed in the NAND flash without any errors and run auto detecting the DDR3 memory bus width (hint hint to Linux-Sunxi developers 🙂 ) it would be great if memory auto detection is implemented in uboot which to detect memory bus width and size and run on any board with any DDR memory configuration.


Now some serious testing and comparison should be made to see if there is advantage to use Dual Core Cortex-A7 with 512MB memory vs. Single Core Cortex-A8 with same memory size.

Any idea what benchmarking to use?

19 Comments (+add yours?)

  1. 2_kamikaze_2
    Nov 15, 2013 @ 16:42:46

    Linpak maybe to see the real power of the cpu, this is good but for what i want now i will one android mini pc instead its faster and as less problems with software


    • Luca Pescatore
      Nov 15, 2013 @ 17:12:22

      There is the SpecInt benchmark that is used normally for servers.


    • Bobby
      Nov 15, 2013 @ 17:34:39

      A20 destroys A10 in floating point intensive benchmarks such as Linpack.

      140 MFLOPS vs 40 MFLOPS


      However, in OpenSSL (single threaded integer performance) A20 is 30-40% slower than A10.


      • OLIMEX Ltd
        Nov 15, 2013 @ 17:47:03

        we did some measurements to run LIME with A10 needs 0.18A and LIME with A20 only 0.14A i.e. A20 Dual Core Cortex-A7 needs 30% less power than single core Cortex-A8

      • Hebatan
        Nov 15, 2013 @ 21:17:55

        Did you also make some heat measurements? It seems both A10 and A20 are useful for different use cases. Will the LIME be offered in both versions? Price from your IC component list seems to be the same for either chip anyway.

  2. bob
    Nov 15, 2013 @ 17:42:03

    the board is amazing, but what a pity only 512Mram :(((
    please, ask me more money but place 1Gram.


  3. iso9660
    Nov 15, 2013 @ 18:12:14

    Please check whether there is not VCC fluctuations when hotplugging USB devices and that you can move 40Gb of data between internal sata and an external USB harddisk.
    Sometimes web give if for granted and it doesn’t always work well.


  4. mgx
    Nov 16, 2013 @ 00:39:50

    Can you please indicate consumption in mA when running on bateries?


  5. Sven Günther
    Nov 18, 2013 @ 23:17:01

    Great Hardware, my wishes for the next device: dual ethernet, A20 and 1GB Ram, 2 USB-Host, one USB-Device on the same size and similar price. it’s a challenge 😉


  6. Diego
    Nov 23, 2013 @ 00:09:32

    For simple benchmarking, I usally use this: http://www.tux.org/~mayer/linux/bmark.html. It’s old, but it’s easy to compare with other hardware. Or you can try coremark.


  7. Trackback: A10 y A20 OLinuXino LIME los rivales no paran de crecer | Raspberry para torpes
  8. ultimateohm
    Feb 22, 2014 @ 21:11:03

    According to this gcc source code (https://github.com/mirrors/gcc/blob/master/gcc/config/arm/arm.c#L11527), it seems Cortex-A7 has its own schedule reordering. This improves benchmarking?


  9. Hugo Filet
    Feb 24, 2014 @ 03:09:37

    Dear Olimex team, when to expect A20-LIME? Please also share some benchmark results, if you have run any tests. Also, are there any news regarding a board with PIC32-HMZ144? Updates appreciated. Thanks in advance!


  10. manuti
    Mar 18, 2014 @ 15:27:18

    Any news with A10-OLinuXino-LIME?


  11. astr
    Jun 15, 2014 @ 00:59:52

    so 500mb ram for the a20 version? I assumed it would be more. (2gb please 😀 ). unlike other boards this board fits the form-factor for my diy handheld project. btw it would be ok for my needs if it is a bit bigger. I’m grateful for the existence of the a10 lime though. saying that though what I really want is a a20 eoma-68 card http://rhombus-tech.net/

    but thank you for your hard work


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